[Boost-users] [Boost][Test] Compile error with BOOST_REQUIRE_THROW

27 Aug 2011

      Hi,
I've just found that we have a compiler error when using the 
BOOST_REQUIRE_THROW macro in a if/else statement with implicit block. 
Let's have an example:

BOOST_AUTO_TEST_CASE(foo)
{
     if(true)
         BOOST_REQUIRE_THROW(throw std::exception(), std::exception);
     else
         BOOST_REQUIRE_THROW(throw std::exception(), std::exception);
}

Will fail with:

file.cpp: In member function ‘void foo::test_method()’:
file.cpp:184:2: error: ‘else’ without a previous ‘if’

To make it work, we need to put explicit block:

BOOST_AUTO_TEST_CASE(foo)
{
     if(true)
     {
         BOOST_REQUIRE_THROW(throw std::exception(), std::exception);
     }
     else
     {
         BOOST_REQUIRE_THROW(throw std::exception(), std::exception);
     }
}

Wouldn't it be possible to add this block in the macro so library users 
don't have to care about?

PS: Sorry for my writing, I'm not a native English speaker.

-- 
Martin Desharnais
martin.desharnais@gmail.com